C - Chemistry – Metallurgy – 12 – Q
Patent
C - Chemistry, Metallurgy
12
Q
150/16.2
C12Q 1/22 (2006.01) A61L 2/28 (2006.01)
Patent
CA 2029487
STERILIZATION BIOLOGICAL TEST PACK ABSTRACT OF THE DISCLOSURE A sterilization biological test pack comprises a first plurality of apertured planar sheets of substantially porous paper disposed to form a stack. Each of the sheets defines a generally centrally disposed aperture, the apertures operatively defining together a single cavity extending through the stack. Second and third pluralities of unapertured planar sheets of substantially porous paper are disposed on opposed sides of the stack and aligned therewith to close the stack cavity at either end thereof and define a chamber about the cavity configured and dimensioned to receive a biological indicator. Fourth and fifth pluralities of unapertured planar sheets of paper of intermediate porosity are disposed on exposed sides of the third and fourth pluralities, respectively, and aligned therewith. A sheet of unapertured paper of a low but appreciable porosity is disposed as an overwrap all about the periphery of the assembly of the first, second, third, fourth and fifth pluralities to control passage of steam and air into and from the assembly, whereby the overwrapped assembly presents a challenge of graded decreasing porosity from the biological indicator in the chamber to both sides of the overwrapped assembly.
Propper Manufacturing Co. Inc.
Wray Robert William
LandOfFree
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